$ git clone -n https://src.fedoraproject.org/rpms/clang17.git /var/lib/mock/f40-build-2581366-62386/root/chroot_tmpdir/scmroot/clang17
Cloning into '/var/lib/mock/f40-build-2581366-62386/root/chroot_tmpdir/scmroot/clang17'...
$ git fetch origin 9ec3807f992f8c7670b0db3ac36b2f49c583b90e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clang17
 * [new ref]         9ec3807f992f8c7670b0db3ac36b2f49c583b90e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ec3807 Fixes for clang resource directory